13601643 has 8 divisors (see below), whose sum is σ = 19784256. Its totient is φ = 8243400.

The previous prime is 13601633. The next prime is 13601647. The reversal of 13601643 is 34610631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13601643 - 2⁵ = 13601611 is a prime.

It is a super-3 number, since 3×13601643³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13601647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206053 + ... + 206118.

It is an arithmetic number, because the mean of its divisors is an integer number (2473032).

Almost surely, 2^13601643 is an apocalyptic number.

13601643 is a deficient number, since it is larger than the sum of its proper divisors (6182613).

13601643 is a wasteful number, since it uses less digits than its factorization.

13601643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412185.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13601643 is about 3688.0405366536. The cubic root of 13601643 is about 238.7062502184.

It can be divided in two parts, 1360 and 1643, that added together give a palindrome (3003).

The spelling of 13601643 in words is "thirteen million, six hundred one thousand, six hundred forty-three".